... XD-PSF400-type vertical axis wind turbine Properties: No core, no hysteresis and cogging, low starting torque Wind generator motorXD-PSF400- ... type vertical axis wind turbine Properties:1. No core, no hysteresis and cogging, low starting torque;2. No iron ... Multi-polar, small gap, high power density, output power;5. Low-speed direct drive, no torque ripple;6. Compact, high-volume power ...